Fix generate-pdfs-platform-5-4 introduced by previous commit [DEVELOP…

…][REL-295] (#378)

[PR-377](#377)
introduced 5.5 release but key was set to 5.4 and should have been 5.5

package.json

@@ -8,7 +8,7 @@
     "build": "antora --to-dir docs --fetch antora-playbook.yml && cp _redirects docs",
     "build-local": "antora --to-dir docs --fetch antora-playbook-local.yml",
     "check-links-local": "antora --fetch --to-dir test --log-level=error --log-failure-level=error --extension=@jcahills/antora-link-checker antora-playbook-local.yml",
-    "generate-pdfs-platform-5-4": "antora assembler-playbook-platform-5-5.yml",
+    "generate-pdfs-platform-5-5": "antora assembler-playbook-platform-5-5.yml",
     "generate-pdfs-platform-5-4": "antora assembler-playbook-platform-5-4.yml",
     "generate-pdfs-platform-5-3": "antora assembler-playbook-platform-5-3.yml",
     "generate-pdfs-platform-5-2": "antora assembler-playbook-platform-5-2.yml",